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.UNiTED STATES PATENT OFFICE".

0mm DENNISON LAKE, or BINGHAMTON, NEW 1011K, l ssIeNon TO THE TABULAT me MACHINE COMPANY, A CORPORATION OF'NEWJERSEY.

PRINTING TAIBULATOR.

Original No. 1,379,268, dated May 24, 1921, Serial No. 348,069, filed December 29, 1919. Application for reissue filed December 3, 1921.

To all whom it may concelm:

Be it known that "I, CLAIR D. LAKE, a

citizen of the United States, residing at.

Binghamton, in the county of Broome and State of New York, have invented certain new and useful Improvements in Printing Tabulators, of which the following is a full, clear, and exact description.

The invention which forms the subject of this application for Letters Patent is an improvement in attachments for tabulating machines, more particularly the well known and widely used I-Iollerith tabulator, which is typical of the general class of machines designed solely for tabulating.

This machine is set forth in numerous patents but is, perhaps, more fully shown and described in Patent No. 94:5,236, dated January 4, 1910.

.In such machines provision is made for passing singly and in rapid succession a stack of perforated cards under a series of brushes or contacts forations, make contact with a conductor over which the cards pass, and thereby energize elcctromagnet's to operate suitably designed and constructed means for indicating the data which the. perforations by their number or location represent. Generally speaking, the main function of such machines is to totalize items and when a determined number of cards has been run through, the indicated totals may be read off and taken down. No provision, as a printing or permanently recording the individual items, as this requires more time, and a slower operation of the machine than its normal use will'permit. Hence, to list the items indicated by a stack of cards, would involve the-reading and recording of each figure displayed by the record wheels.

My purpose has been to extend the field of usefulness of such machines, and to provide means whereby they may be called upon, when occasion requires, to list or print the items and to print or record subtotals and totals,.'and in general to make a permanent record of whatever operation they may be called upon to perform. With this object inunind I have devised an atas the case may be,

which, encountering per Serial No. 519,780.

tachment to a tabulator which will operate in synchronism or exact accord therewith to record each item, subtotal or grand total .and to adapt the tabulator to listing I provide means for varying and controlling its speed whereby it- .must be run at'a reduced speed when listing or may be run at its normal high speed when merely tabulating.

The accomplishment of this result has involved chiefly the devising of new mechanical and electrical devices, and combinations, and in these the invention resides. The general nature of the improvement may therefore be gathered from the consideration that in the tabulator indicating wheels which are set to indicate the numbers corresponding to the perforations in the cards. My new attachment is capable of printing each number so indicated, or the totals of a group of Such numbers, or the grand totals of several groups. It is provided with means for resetting the indicating wheels to zero after any or any number of operations, so that after resetting no totals may be preserved, or on the other hand, if not :reset, a subtotal may be printed and preserved, so that the next printed total will be a grand total and so on.

As above stated,--there is used a controlling device by which the speed of the tabulator is reduced when the attachment is used for listing, but if only totals are to be printed,

then the machine may be set for the higher or normal tabulator speed, and the individ ual numbers are not printed, the totals being recorded automatically or by pressing a button, which causes the proper mechanism for the purpose to operate.

The improvement is illustrated in detail in proper there are a number of 

